* {
    padding: 0;
    margin: 0;
}

body {
    display: flex;
    justify-content: center;
    /* 令白框水平居中 */
    height: 100vh;
    align-items: center;
    /* 加上height: 100vh才能实现垂直居中效果 */
    background: rgb(51, 44, 122);
}

.banner {
    position: relative;
    padding: 58px;
    width: 400px;
    height: 460px;
    background: rgba(255, 255, 255, 0.5);
    box-shadow: inset 0px 0px 4px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(100px);
    border-radius: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-sizing: border-box;
}

.text {
    height: 15%;
    color: rgb(69, 46, 46);
}

.banner form {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    height: 85%;
}

.btn {
    padding: 0 12px;
    width: 100%;
    height: 13%;
    border: none;
    outline: none;
    border-radius: 5px;
    box-sizing: border-box;
}

.bluebgc {
    background-color: rgb(68, 54, 210);
}

.banner .yzm {
    position: absolute;
    top: 39.5%;
    right: 16%;
    width: 20%;
    height: 7%;
    font-size: 12px;
    color: #fff;
    border: none;
    border-radius: 5px;
    background-color: rgb(68, 54, 210);
}

.banner .robot {
    position: absolute;
    right: -47%;
    bottom: -7%;
}

.getCode2{
    position: absolute;
    top: 39.5%; 
    right: 16%;
    width: 20%;
    height: 7%;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    font-size: 14px;
    color: #fff;
    border: none;
    border-radius: 5px;
    background-color: rgb(68, 54, 210);
}